A dog went to deep into a jungle. It saw a snake and asked, "Do you have no friends?" The snake answered, "Yes, I have no friends." The dog asked, "Will you be my friend?" The dog finished his sentence. They were friends over the next 18 days. One day they were playing together. The dog unintended to hurt snake. But snake became angry and bite the dog. The dos was killed by his bad friend. 
Chose good friends carefully. 